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Yamaha CS-15

(image courtesy of Yamaha)

Released: 1978

MSRP: 110,250 ($835US)


Simplified CS30 (no sequencer, EG3, or ring-mod and fewer modulation and signal routing options) or 2x CS-5. Architecture Class: Conventional (subtractive).

Ebay Description:

The Yamaha CS-15 is a 37 key, monophonic analog synthesizer, featuring dual signal paths (oscillator/filter/amp), an LFO (saw:down, sine, S/H waveforms), 2 envelopes (ADSR), external filter input, and CV/gate IO. Each signal path features an oscillator (saw and pulse waveforms) with FM and portamento, noise, and resonant low|high|band pass filter.


Form Factor Dimensions Weight Audio Input Audio Output Communication Port Control Input Control Output Switch Input Power
37 keys W:754mm(29.625in) D:332.5mm(13.125in) H:174mm(6.875in) 10kg(22lbs) no mono:low/high no CV:2 gate:2 (key/sequencer) CV gate no AC (15W)


Compatibility Multitimbral Memory Program Memory External Storage External Programming UI Input UI Output
- N/A no no no dedicated sliders/knobs LED


Multitimbral Polyphony Unison Architecture
2 1 no [VCO1+Noise|Ext->VCF1->VCA1] [VCO1+VCO2->VCF2->VCA2]


Effects Pan Modulator Volume Modulator Headphone
no no VCA-EG LFO yes


Arpeggiator Arpeggiator External Sequencer Sequencer Memory Sequencer External Continuous Program Change
no N/A no N/A N/A portamento-slider brilliance-slider pitch-slider no


Key Pressure Chord Memory External Control External Sustain Key Scaling Velocity Curves
no no no no no no


Name Signal Class Waveform Octave Range Amplitude Modulator Harmonics Modulator Pitch Modulator Wave Assign Modulator
VCO1 analog pulse saw triangle 2-64' no PWM VCO2 CV key LFO portamento no
VCO2 analog pulse saw triangle 2-64' no PWM CV key LFO portamento no
Noise analog external noise - no no no no


Name Signal Class IC Resonant Shape Frequency Modulator Resonance Modulator Shape Modulator
VCF1 analog IG00156 yes low|high|band pass EG1 EG2 Key LFO no no
VCF2 analog IG00156 yes low|high|band pass EG1 EG2 Key LFO no no


Name Level Rate Loop Polarity Trigger Level Modulator Rate Modulator
EG1 sustain attack decay release no VCF LFO gate key no no
EG2 sustain attack decay release no VCF LFO gate key no no


Name Waveform Delay Polarity Sync Delay Modulator Level Modulator Rate Modulator
LFO saw:down sine S/H no no key no no no
Conventional Models
SY-1 SY-2 CS-10 CS-30 CS-30L CS-50 CS-60 CS-80
CS-5 CS-15 CS-15D CS-20M CS-40M CS-70M CS-01 SK10
SK15 SK20 SK30 SK50D SY-20 AN1x